Automatic assembling and welding device and method for large-size high-strength curved rib segment

Abstract

This invention proposes an automatic circular welding device and method for large-size, high-strength bent rib segments. It includes a sheet metal adjustment and assembly unit, a sheet metal welding unit, and an assembly accuracy detection unit. The assembly accuracy detection unit uses a laser scanning device to position the rib segments and adjust their circumferential and horizontal dimensions based on theoretical data. The sheet metal adjustment and assembly unit then assembles the rib segments into a circular shape. A web plate clamping mechanism and a panel clamping mechanism clamp the rib segments to secure them during welding. Circumferential adjustment rollers on the sheet metal provide horizontal and circumferential adjustment. Preheating is done manually, followed by double-sided, double-arc welding by a welding robot. The welding process requires no positioning; the equipment maintains the shape of the rib segments, achieving automatic scanning, adjustment, assembly, and welding to complete the circular welding of the inner and outer rib rings. This invention is suitable for application as an automatic circular welding device and method for large-size, high-strength bent rib segments.

Description

Technical Field

[0001] This invention relates to the field of structural assembly, and in particular to an automatic circular welding device and method for large-size, high-strength bent rib segments. Background Technology

[0002] With the development of the large-scale industrial equipment and tooling manufacturing industry, the assembly and welding technology of large structural components urgently needs to be upgraded. The assembly method of structural plates is shifting from the previous single manual assembly to semi-automatic or automatic assembly. However, for the assembly and welding of large-sized, high-strength, curved rib segments, due to the special limitations of plate size, thickness, material, and strength, the original methods of manual adjustment or welding positioning are still used to solve the assembly problem. The subsequent welding work is even more cumbersome and inefficient, and automatic assembly and welding cannot be achieved. The difference between this method and the previous rib segment assembly is that for the assembly and welding of large-sized, high-strength, curved rib segments, the adjustment, assembly, alignment, inspection, and welding of the rib segments can be completed automatically, and the high-precision rib segment assembly and welding technology requirements are met. Summary of the Invention

[0003] To address the shortcomings of existing technologies, particularly the cumbersome and inefficient subsequent welding work and the inability to automate the assembly and welding of large-sized, high-strength bent rib segments, this invention provides an automated circular welding device and method for large-sized, high-strength bent rib segments. This method utilizes a laser detection device for laser scanning and positioning, a web plate clamping mechanism and a panel clamping mechanism to clamp the rib segments and fix them during the welding process, and circumferential adjustment rollers on the plate material to achieve levelness and circumferential adjustment, thus solving the technical problems in assembling and welding large-sized, high-strength bent rib segments.

[0004] The solution adopted by this invention to solve the technical problem is:

[0005] An automatic circular welding device for large-size, high-strength bent rib segments includes a plate adjustment and assembly unit, a plate welding unit, and an assembly accuracy detection unit.

[0006] The sheet metal adjustment and assembly unit is circumferentially arranged on the sheet metal adjustment and assembly unit guide rail. The sheet metal welding unit and the assembly accuracy detection unit are circumferentially arranged on the same rail as the sheet metal welding unit and the assembly accuracy detection unit guide rail. The assembly accuracy detection unit uses a laser detection device to scan and position the rib segments. Based on theoretical data, the rib segments are adjusted circumferentially and horizontally. The sheet metal adjustment and assembly unit realizes the assembly of the rib segments into a circle. The web plate pressing mechanism and the panel pressing mechanism press the rib segments to fix them during the welding process. The sheet metal circumferential adjustment roller realizes the horizontal and circumferential adjustment functions of the sheet metal. Preheating is done manually. Then, the welding robot performs double-sided double-arc welding. The welding process does not require positioning welding. The equipment maintains the shape of the rib segments, realizing the functions of automatic scanning, adjustment, assembly and welding of large-size, high-strength bent rib segments, and completing the assembly of the inner and outer rib rings into a circle.

[0007] To further address the technical problem addressed by this invention, the present invention provides an automatic circular welding method for large-size, high-strength bent rib segments, comprising the following steps:

[0008] 1) The sheet metal adjustment and assembly unit, sheet metal welding unit, and assembly accuracy detection unit automatically adjust the position and orientation of each sheet metal adjustment and assembly unit according to the radius data of the rib ring to adapt to inner and outer ribs of different diameters.

[0009] 2) A quarter rib section is lifted by a crane onto the assembly mechanism body of the plate adjustment and assembly unit. The panel pressing mechanism presses the rib section to ensure that the panel weld is aligned when the rib section is assembled into a circle.

[0010] 3) The circumferential adjusting rollers of the sheet metal lift the rib section;

[0011] 4) The laser inspection device of the assembly accuracy inspection unit scans the sheet metal data, including height and end face position;

[0012] 5) The plate adjustment assembly unit adjusts the rib segments circumferentially according to the theoretical position of the rib segments. The end faces of the four rib segments are located at 0°, 90°, 180° and 270° of the equipment, respectively.

[0013] 6) After the circumferential adjustment is completed, the circumferential adjustment roller of the plate descends to place the rib section on the assembly mechanism body, and the web plate clamping mechanism clamps the rib section.

[0014] 7) Following step 6), repeat the assembly, pressing, and fixing of the remaining three quarter-rib segments in sequence;

[0015] 8) The laser detection device of the assembly accuracy detection unit scans and measures the end face position and horizontal height of the rib segment, with the diameter value as a reference panel.

[0016] 9) The circumferential adjusting rollers and the web clamping mechanism simultaneously adjust the horizontal height of the rib section to ensure the alignment of the web weld bevel and the horizontality and waviness of the web; the plate adjusting assembly unit finely adjusts the diameter of the rib section on the guide rail to ensure that the rib section forms the theoretical value of the rib ring.

[0017] 10) The laser detection device of the assembly accuracy detection unit scans and inspects the sheet material data again. If it fails to meet the requirements, adjustments are made. If it meets the requirements, the sheet material is preheated manually.

[0018] 11) The weld seam is double-sided double-arc welding by the plate welding unit;

[0019] 12) After welding, the equipment is lifted by a crane and transported to the next work station.

[0020] The positive effects of this invention are that it employs an automatic circular welding device for large-size, high-strength bent rib segments, enabling the adjustment, assembly, alignment, inspection, and welding of large-size, high-strength bent rib segments. It can process inner and outer rib rings with outer diameters of 4-15mm, and can process sheet metal with web thicknesses of 10-100mm and widths of 200-800mm, and face plate thicknesses of 10-100mm and widths of 100-600mm. The pre-welding assembly accuracy of the sheet metal can achieve: perpendicularity between the web and face plate (within half the width) ≤1mm, rib segment wall thickness difference ≤1mm, web corrugation 1mm / m, and radius difference ≤2mm. The post-welding accuracy is: face plate and web perpendicularity ≤1mm, web corrugation 1mm / m, and radius difference ≤2mm. This improves upon traditional methods of rib segment circular assembly and welding, meeting higher assembly and welding accuracy requirements. The web plate clamping mechanism and the panel clamping mechanism clamp the rib segments to fix them during the welding process. The circumferential adjusting rollers on the plate allow for leveling and circumferential adjustment, eliminating the need for manual assembly, adjustment, and positioning using traditional tools. A laser detection device measures the assembly accuracy of the plate, solving the problems of large errors and long time consumption associated with manual measurement. The welding robot enables intelligent double-sided, double-arc welding of the rib segments, saving a significant amount of welding labor. This device and method overcome the drawbacks of long cycles, low accuracy, and difficult construction associated with manual methods, effectively optimizing the assembly and welding process. Furthermore, the device is advanced, the assembly method is simple, the assembly accuracy is high, the efficiency is high, and the processing range is wide, offering broad market and application prospects. It is suitable as an automatic circular welding device and method for large-size, high-strength bent rib segments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0022] Figure 1 Top view schematic diagram of the device for assembling and welding rib segments to form a rib ring;

[0023] Figure 2 Side view schematic diagram of the rib segment adjustment assembly unit;

[0024] Figure 3 This is a schematic diagram for inspecting rib segments and double-sided double-arc welding.

[0025] In the diagram, 1. Transmission screw, 2. Web plate clamping mechanism, 3. Servo motor, 4. Slide rail a, 5. Assembly mechanism body, 6. Power unit a, 7. Shaft a, 8. Plate circumferential adjustment roller, 9. Shaft b, 10. Power unit b, 11. Bracket, 12. Transmission rod, 13. Power unit c, 14. Assembly mechanism base, 15. Power unit d, 16. Panel clamping mechanism, 17. Power unit e, 18. Plate adjustment assembly unit guide rail, 19. Laser detection device, 20. Universal shaft a, 21. Forearm, 22. Universal shaft b, 23. Welding torch, 24. Upper arm, 25. Base, 26. Power unit f, 27. Plate welding unit and assembly accuracy detection unit guide rail, 28. Panel circumferential driven roller, 29. Shaft c, 32. Slide rail b, 33. Panel clamping head. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] In the description of the embodiments in this application, the term "multiple" refers to two or more (including two). Similarly,

[0032] "Multiple sets" refers to two or more sets (including two sets), and "multiple tablets" refers to two or more tablets (including two tablets).

[0033] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0034] In the description of the embodiments in this application, unless otherwise expressly specified and limited, the technical term "installation" will be used.

[0035] Terms such as “connected,” “linked,” and “fixed” should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0036] As shown in the figure, an automatic circular welding device for large-size, high-strength bent rib segments includes a plate adjustment and assembly unit, a plate welding unit, and an assembly accuracy detection unit.

[0037] The sheet metal adjustment and assembly unit is circumferentially arranged on the sheet metal adjustment and assembly unit guide rail 18. The sheet metal welding unit and the assembly accuracy detection unit are circumferentially arranged on the sheet metal welding unit and assembly accuracy detection unit guide rail 27. The assembly accuracy detection unit uses laser detection device 19 for laser scanning and positioning. Based on theoretical data, the rib segments are adjusted circumferentially and horizontally. The sheet metal adjustment and assembly unit realizes the assembly of the rib segments into a circle. The web plate pressing mechanism 2 and the panel pressing mechanism 16 press the rib segments to fix them during the welding process. The sheet metal circumferential adjustment roller 8 can realize the horizontal and circumferential adjustment functions of the sheet metal. Preheating is done manually. Then, the welding robot performs double-sided double-arc welding. The welding process does not require positioning welding. The equipment maintains the shape of the rib segments, realizing the automatic scanning, adjustment, assembly and welding functions of large-size high-strength bent rib segments, and completing the assembly of the inner and outer rib rings.

[0038] To ensure the stability of the structure of this invention, the sheet metal adjustment and assembly unit includes a transmission screw 1, a web plate pressing mechanism 2, a servo motor 3, a slide rail a4, an assembly mechanism body 5, a power device a6, a shaft a7, a sheet metal circumferential adjusting roller 8, a shaft b9, a power device b10, a bracket 11, a transmission rod 12, a power device c13, an assembly mechanism base 14, a power device d15, a panel pressing mechanism 16, a power device e17, a panel circumferential driven roller 28, a shaft c29, a slide rail b32, and a panel pressing head 33;

[0039] The sheet metal adjustment assembly unit guide rail 18 is circumferentially arranged on the foundation. The circumferential angles of the arrangement positions of the sheet metal adjustment assembly unit guide rail 18 are -8°, 8°, 45°, 82°, 98°, 135°, 172°, 188°, 225°, 262°, 278°, and 315°, respectively. The sheet metal adjustment assembly unit is installed on the sheet metal adjustment assembly unit guide rail 18.

[0040] Servo motor 3 drives web plate pressing mechanism 2 to move up and down on slide rail a4 via transmission screw 1. Servo motor 3 and slide rail a4 are mounted on assembly mechanism body 5. Plate circumferential adjusting roller 8 is mounted on bracket 11 via shaft b9. Power device b10 mounted on bracket 11 drives plate circumferential adjusting roller 8 to rotate via shaft b9. Power device c13 mounted on assembly mechanism body 5 drives bracket 11 to move up and down via transmission rod 12. Power device a6 is mounted on assembly mechanism body 5. Power device a6 moves up and down on the assembly mechanism via shaft a7. The power unit d15, which is mounted on the assembly mechanism base 14, drives the assembly mechanism base 14 to move on the plate adjustment assembly unit guide rail 18. The panel circumferential driven roller 28 is mounted on the panel pressing head 33 through the shaft c29. The panel circumferential driven roller 28 rotates freely through the shaft c29. The panel pressing head 33 is connected to the panel pressing mechanism 16 through the slide rail b32 and slides freely up and down. The power unit e17 is mounted on the panel pressing mechanism 16 and drives the panel pressing mechanism 16 to move on the plate adjustment assembly unit guide rail 18.

[0041] To further ensure the stability of the structure of the present invention, the plate welding unit includes a universal joint a20, a forearm 21, a universal joint b22, a welding torch 23, a boom 24, a base 25, and a power unit f26.

[0042] The assembly accuracy detection unit includes a laser detection device 19, a universal joint a20, a forearm 21, a universal joint b22, a large arm 24, a base 25, and a power unit f26;

[0043] The guide rail 27 of the plate welding unit and the assembly accuracy detection unit is arranged circumferentially on the foundation. The circumferential angles of the arrangement positions of the guide rail 27 of the plate welding unit and the assembly accuracy detection unit are 0°, 90°, 180° and 270° respectively. The plate welding unit and the assembly accuracy detection unit are arranged on the guide rail 27 of the plate welding unit and the assembly accuracy detection unit.

[0044] The laser inspection device 19 is mounted on the forearm 21 via the universal joint b22 and rotates freely. The forearm 21 is mounted on the upper arm 24 via the universal joint a20 and rotates freely. The upper arm 24 is mounted on the base 25. The power unit f26 is mounted on the base 25 and drives the base 25 to move on the guide rail 27 of the plate welding unit and assembly accuracy inspection unit. The welding torch 23 is mounted on the forearm 21 via the universal joint b22 and rotates freely. The forearm 21 is mounted on the upper arm 24 via the universal joint a20 and rotates freely. The upper arm 24 is mounted on the base 25. The power unit f26 is mounted on the base 25 and drives the base 25 to move on the guide rail 27 of the plate welding unit and assembly accuracy inspection unit.

[0045] An automated circular welding method for large-size, high-strength bent rib segments includes the following steps:

[0046] 1) The sheet metal adjustment and assembly unit, sheet metal welding unit, and assembly accuracy detection unit automatically adjust the position and orientation of each sheet metal adjustment and assembly unit according to the radius data of the rib ring to adapt to inner and outer ribs of different diameters.

[0047] 2) A quarter rib section is lifted by a crane onto the assembly mechanism body 5 of the plate adjustment and assembly unit. The panel pressing mechanism 16 presses the rib section to ensure that the panel weld is aligned when the rib section is assembled into a circle.

[0048] 3) The circumferential adjusting roller 8 of the sheet metal lifts up the rib section;

[0049] 4) The laser detection device 19 of the assembly accuracy detection unit scans the plate data, including height and end face position;

[0050] 5) The plate adjustment assembly unit adjusts the rib segments circumferentially according to the theoretical position of the rib segments. The end faces of the four rib segments are located at 0°, 90°, 180° and 270° of the equipment, respectively.

[0051] 6) After the circumferential adjustment is completed, the circumferential adjustment roller 8 of the plate descends to place the rib segment on the assembly mechanism body 5, and the web plate pressing mechanism 2 presses the rib segment.

[0052] 7) Following step 6), repeat the assembly, pressing, and fixing of the remaining three quarter-rib segments in sequence;

[0053] 8) The laser detection device 19 of the assembly accuracy detection unit scans and measures the end face position and horizontal height of the rib segment, with the diameter value as a reference panel.

[0054] 9) The circumferential adjustment roller 8 and the web plate clamping mechanism 2 simultaneously adjust the horizontal height of the rib section to ensure the alignment of the web plate weld bevel and the horizontality and waviness of the web plate; the plate adjustment assembly unit makes fine adjustments on the plate adjustment assembly unit guide rail 18 to adjust the diameter value of the rib section to ensure that the rib section forms the theoretical value of the rib ring.

[0055] 10) The laser detection device 19 of the assembly accuracy detection unit scans and inspects the plate data again. If it is not qualified, it continues to be adjusted. After it is qualified, the plate is preheated manually.

[0056] 11) The weld seam is double-sided double-arc welding by the plate welding unit;

[0057] 12) After welding, the equipment is lifted by a crane and transported to the next work station.

[0058] Features of this embodiment:

[0059] This method uses laser scanning for positioning and adjusts the rib segments circumferentially and horizontally based on theoretical data. The rib segments are then assembled into a circle using a sheet metal adjustment assembly unit. Preheating is done manually, followed by double-sided, double-arc welding by a welding robot. The welding process requires no positioning; the equipment maintains the shape of the rib segments. It can automatically scan, adjust, assemble, and weld large-sized, high-strength bent rib segments, and can complete the assembly of inner and outer rib rings with outer diameters of 4-15mm. The sheet metal processing capability is: web thickness 10-100mm, width 200-800mm; face plate thickness 10-100mm, width 100-600mm. Pre-welding assembly accuracy can achieve: web-face plate (within half width) perpendicularity ≤1mm, rib segment wall thickness ≤1mm, web corrugation 1mm / m, radius difference ≤2mm. Post-welding accuracy: face plate-web perpendicularity ≤1mm, web corrugation 1mm / m, radius difference ≤2mm. This improves upon the traditional method of assembling and welding rib segments, meeting a higher requirement for assembly and welding precision.

[0060] Finally, it should be noted that:

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic circular welding device for large-size, high-strength bent rib segments, characterized in that: This includes a sheet metal adjustment and assembly unit, a sheet metal welding unit, and an assembly accuracy detection unit; The plate adjustment assembly unit includes a transmission screw (1), a web plate pressing mechanism (2), a servo motor (3), a slide rail a (4), an assembly mechanism body (5), a power device a (6), a shaft a (7), a plate circumferential adjustment roller (8), a shaft b (9), a power device b (10), a bracket (11), a transmission rod (12), a power device c (13), an assembly mechanism base (14), a power device d (15), a panel pressing mechanism (16), a power device e (17), a panel circumferential driven roller (28), a shaft c (29), a slide rail b (32), and a panel pressing head (33). The plate adjustment assembly unit guide rail (18) is arranged circumferentially on the foundation. The circumferential angles of the plate adjustment assembly unit guide rail (18) are -8°, 8°, 45°, 82°, 98°, 135°, 172°, 188°, 225°, 262°, 278°, and 315° respectively. The plate adjustment assembly unit is installed on the plate adjustment assembly unit guide rail (18). The servo motor (3) drives the web plate pressing mechanism (2) to move up and down on the slide rail a (4) via the transmission screw (1). The servo motor (3) and the slide rail a (4) are mounted on the assembly mechanism body (5). The plate circumferential adjustment roller (8) is mounted on the bracket (11) via the shaft b (9). The power device b (10) mounted on the bracket (11) drives the plate circumferential adjustment roller (8) to rotate via the shaft b (9). The power device c (13) mounted on the assembly mechanism body (5) drives the bracket (11) to move up and down via the transmission rod (12). The power device a (6) is mounted on the assembly mechanism body (5). The power device a (6) is driven by the shaft a (7). The assembly mechanism base (14) rotates, and the power device d (15) installed on the assembly mechanism base (14) drives the assembly mechanism base (14) to walk on the plate adjustment assembly unit guide rail (18). The panel circumferential driven roller (28) is installed on the panel pressing head (33) through the shaft c (29). The panel circumferential driven roller (28) rotates freely through the shaft c (29). The panel pressing head (33) is connected to the panel pressing mechanism (16) through the slide rail b (32) and slides freely up and down. The power device e (17) is installed on the panel pressing mechanism (16) and drives the panel pressing mechanism (16) to walk on the plate adjustment assembly unit guide rail (18). The guide rail (27) of the plate welding unit and the assembly accuracy detection unit is arranged circumferentially on the foundation. The circumferential angles of the arrangement positions of the guide rail (27) of the plate welding unit and the assembly accuracy detection unit are 0°, 90°, 180° and 270° respectively. The plate welding unit and the assembly accuracy detection unit are arranged on the guide rail (27) of the plate welding unit and the assembly accuracy detection unit. The laser detection device (19) of the assembly accuracy detection unit is used for laser scanning and positioning. The rib segments are adjusted circumferentially and horizontally according to theoretical data. The rib segments are assembled into a circle by the plate adjustment assembly unit. The web plate pressing mechanism (2) and the panel pressing mechanism (16) press the rib segments to fix them during the welding process. The plate circumferential adjustment roller (8) realizes the horizontal and circumferential adjustment functions of the plate. Preheating is done manually. Then, the welding robot performs double-sided double-arc welding. The welding process does not require positioning welding. The rib segments are shaped and the automatic scanning, adjustment, assembly and welding of large-size high-strength bent rib segments are realized. The inner and outer rib rings are assembled into a circle.

2. The automatic circular welding device for large-size, high-strength bent rib segments according to claim 1, characterized in that: The plate welding unit includes a universal joint a (20), a forearm (21), a universal joint b (22), a welding torch (23), a boom (24), a base (25), and a power unit f (26). The assembly accuracy detection unit includes a laser detection device (19), a universal joint a (20), a forearm (21), a universal joint b (22), a large arm (24), a base (25), and a power unit f (26). The laser inspection device (19) is mounted on the forearm (21) via the universal joint b (22) and rotates freely. The forearm (21) is mounted on the upper arm (24) via the universal joint a (20) and rotates freely. The upper arm (24) is mounted on the base (25). The power device f (26) is mounted on the base (25) and drives the base (25) to move on the guide rail (27) of the plate welding unit and assembly accuracy inspection unit. The welding torch (23) is mounted on the forearm (21) via the universal joint b (22) and rotates freely. The forearm (21) is mounted on the upper arm (24) via the universal joint a (20) and rotates freely. The upper arm (24) is mounted on the base (25). The power device f (26) is mounted on the base (25) and drives the base (25) to move on the guide rail (27) of the plate welding unit and assembly accuracy inspection unit.

3. An automatic circular welding method for large-size, high-strength bent rib segments, characterized by: The automatic circular welding device for large-size, high-strength bent rib segments as described in claim 2 includes the following steps: 1) The sheet metal adjustment assembly unit, sheet metal welding unit, and assembly accuracy detection unit automatically adjust the position and orientation of each sheet metal adjustment assembly unit according to the radius data of the rib ring to adapt to inner and outer ribs of different diameters. 2) A quarter rib section is lifted by a crane onto the assembly mechanism body (5) of the plate adjustment assembly unit. The panel pressing mechanism (16) presses the rib section to ensure that the panel weld is aligned when the rib section is assembled into a circle. 3) Use the circumferential adjusting rollers (8) to lift the rib section; 4) The laser detection device (19) of the assembly accuracy detection unit scans the plate data, including height and end face position; The sheet metal adjustment assembly unit adjusts the rib segments circumferentially according to their theoretical positions. The circumferential angles of the end faces of the four rib segments are 0°, 90°, 180°, and 270°, respectively. 6) After the circumferential adjustment is completed, the circumferential adjustment roller (8) of the plate descends and places the rib section on the assembly mechanism body (5), and the web plate pressing mechanism (2) presses the rib section. 7) Repeat steps 2)-6) to assemble and clamp the remaining three quarter-rib segments in sequence; 8) The laser detection device (19) of the assembly accuracy detection unit scans and measures the end face position and horizontal height of the rib segment with the diameter value based on the panel. 9) The circumferential adjustment roller (8) and the web clamping mechanism (2) simultaneously adjust the horizontal height of the rib section to ensure the alignment of the web weld groove and the horizontality and waviness of the web; the plate adjustment assembly unit makes a fine adjustment on the plate adjustment assembly unit guide rail (18) to adjust the diameter value of the rib section to ensure that the rib section forms the theoretical value of the rib ring. 10) The laser detection device (19) of the assembly accuracy detection unit scans and inspects the plate data again. If it is not qualified, it continues to be adjusted. After it is qualified, the plate is preheated manually. 11) The weld seam is welded on both sides by the plate welding unit; 12) After welding, the equipment is lifted by a crane and transported to the next work station.

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